Wendy (Revenge of the Slitheen)
From Tardis Wiki, the free Doctor Who reference
Wendy was the headmistress of the St Cheldon's Comprehensive School.
Sarah Jane Smith visited her at the school. Wendy told her that the school had the wiring in their technology block re-installed. Since then computers kept crashing and food became rotten. Wendy also mentioned that it smellled like batteries in the school. She told Sarah Jane that one of the parent governors had complained about it during their meeting. However he fell off his bike the next morning and had to stay three months in traction. Wendy thought that this events were just the beginning. (TV: Revenge of the Slitheen)
